New thermostat but still running cold

[RCCUMMINS89]

Is it hazing more than it used to?

[Firstgen11]

So your saying if I advance my timing it will work right? Don't make much since if so?

[Firstgen11]

So your saying if I advance my timing it will work right? Don't make much since if so? And not really it's actually smoking less now I've got my pump tuned and the max fuel screw is in almost maxed out

[RCCUMMINS89]

Your timing doesn't change.... However, I am curious on what your timing is at?

[Firstgen11]

You said to advance my pump timing it's at stock stock right now not been moved

[ellis93]

Your timing may be at stock settings,piston at the same height when the injection pump pushes fuel,but your compression is down......that much I'm sure of. With lower compression it's hard for me to believe that your burning more fuel (less smoke and than before) at the same pump settings.
By advancing the pump you keep more of the heat of combustion in the cylinder,more fuel burn time. This leads to lower seen egt and cleaner exhuast (might haze at idle depending on injector). In my opinion if you add fuel to your engine you should add some timing to take advantage of the extra fuel. There is a point where you go to far tho.

[Firstgen11]

I can't remember if I stepped up timing or not but egts are really cool I can't get above 1100 which is great and that's even pulling hard

[ellis93]

Then throw cardboard in front of the radiator and motor on.

[Firstgen11]

I'm gonna have to to stay warm looks like so you think everything is working perfectly fine though I mean I know running cool is good but I'm just a little worried that it's running too cold

[ellis93]

I'm no expert,I'm just telling you things I've seen thru fooling around with a few of mine. My dodge in my sig runs half gauge at all times.....running empty or hauling,doesn't matter. But my timing is jumped one tooth on my pump gear and I have the pump mark a fuzz over the timing cover mark. My guess is around 12* or so above what stock was. Does that sound very technical to you?, nope. It's a guessing game as to where your timing should be set,I have the tooling to set the pump timing just lack the time or patients to fool with it because it's a pita. Now the pump is shot and making the truck run on like 4cylinders so I've got to see where things are.
Bottom line is,in any engine....gas or diesel,heat plays a part in making power. It eases the combustion process for diesel,that is why cummins throws a spec out for the engine to run a certain temp. Occasionally some like to run cooler than others. I have a 82 chevy with a ppump cummins in it,that thing runs so cool that it won't register on the trucks gauge. It barely runs 140* here the last few days. It does however give enough heat to the trucks heater core to warm the toes so I ain't worried about it.

The cardboard idea is what a lot do in colder areas.....call it a winter front. Just to block enough wind to keep the engine temp up.

[BILTIT]

Yup, anything below freezing and i use a winter front (cardboard). When it goes below -4F i also block in the underneath of the engine compartment.

[CumminsPower59]

There was the mention of having the cylinder head off, did you check the vacuum connect tions that go to the HVAC assembly? Something may have been pumped or piched. Did you check the operation of the vacuum operated valve in line with the heater core? Not that it may or may not matter, check the oreintation of that valve, they do have a direction of flow. Anything to do with the cooling circuits is worth checking

[Firstgen11]

I'm pretty sure I took that vacuum out operated thing out because my truck warmed up a lot quicker and ran just a little cooler after I did and I got heat inside the cab a lot quicker but yeah checked all hoses everything checked out great I'm just gonna try the cardboard and see where I can get from there it's just confusing how everything worked great until I decked my head then my truck won't even warm up afterwards I mean I love it in the summer time that it never gets anywheres around hot but just worries me in the winter I'll try the cardboard tonight and let yall know something

[thrashingcows]

What about your clutch fan seizing up? Then you would be pulling a lot more air and cooling things off way to much. I had a clutch fan seize on me, it sure cooled things great.

[RCCUMMINS89]

Do you hear a lot of fan noise? Sound like a jet taking off? (I think that would be a good way to describe it?)